So the final decision has been made.
We are running a 13:1 (ish) 406 with roller cam that will be matched to our set of Brodix -10 SP 40/60, 2.125" intake valve, 233 intake runner 23 degree heads. We will run lightweight, balanced rotating assembly.
Choices for block:
511 4-bolt block;
817 2-bolt block the way it sits;
spend $$ to upgrade the 817 to splayed caps.
We have these two blocks already. We aren't going to go aftermarket block. The 817 is already prepped, minus the final hone for pistons, and the possible splayed caps.
Opinions?